Olivee aenold



(No Model.) v

0. ARNOLD.

ROLLER sKATE;

No. 287,607. Patent e d ocmo, 1883.

* 1 UNITED- STATES ROLLER-SKATE.

PATENT O FICE...

OLIVER ARNOLD, or WORCESTER, MASSACHUSETTS, ASSIGNOR or ONE-HALF TO JOHNL. TRUAX,

OF SAME PLACE.

SPECIFICATION forming part of Letters latent No. 287,607, dated October30, 1888,

Application filed March 22, 1883. (Nomodeh) .TO all whom it mayconcern.- I

Be it known that I, OLIVER ARNOLD, a citizen of the United States,residing at Worcester, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inRoller-Skates, of which the following is a specification, referencebeing had to the accompanying drawings, forming a part thereof.

The object of my invention is to produce a rollerskate which is verysimple in construction, eff cient'in operation, and strong and durable,myconstruction permitting the skater to control the motion of the trucksin making curves with great ease by simply inclining the body, and' thusthrowing theweight on one side or the other of the tread or stock withwhich the trucks or roller frames are connected.-

In the accompanying drawings, in which like letters indicatecorresponding parts in the several figures, Figure l is a longitudinalsectional view of my improved skate. Fig. 2 is a reverse plan View .ofthe same with the trucks in their natural positions. Fig. 3 is a viewsimilar to Fig. 2, but showing the trucks and spring-bar in thepositions which they will occupy when the skater is describing acurve.

A indicates the stock or tread, to which are secured, by screws orotherwise, the bearingplates B, provided with concave sockets b. Aguide-arm or support, 0, is also firmly secured to the stock or tread A,near the center thereof. Said guide-arm or support may consist of astraight bar havinga flanged portion, 0, at its upper end, through whichthe screws securing it to the stock- A are passed, and at its lower endan eye, a, in which a spring rod or bar, D, is supported; or, instead ofthe construction just described, the guide-arm may be forked orU form inshape, the spring rod or barD being sustained in the lower portionthereof. I

The roller frames or trucks consist of rightangular brackets E, theupper ends of their vertical portions being rounded to form ballbearings6, adapted to the sockets b in the bearing-plates B. The horizontalportions E of the brackets E are secured to a spring rod or bar, D,sustained by the guide-arm C, said spring rod or bar thus serving toconnect the or pins G, passing through the brackets E, saidrollers'being secured on said axles or pins in any suitable manner, thebrackets E being provided with lateral extensions e, to afford a widebearing for the axles G;

From the foregoing description it will be evident that the trucks orroller frames are held in their straightforward or normal positions bythe spring bar or rod D, and that they are held to their bearings in theplates B by this same spring bar or rod. It will also be apparent thatthe ball-and-socket or universal-joint connections of the trucks withthe stock or tread will permit said trucks to move in any desireddirection relative to the said stock, to accommodate the movements ofthe skater. to one side, throwing his weight on the side of the stock ortread, the latter will be slightly inc1ined,causing the trucks to assumethe posi- Thus, as the skater inclines his body-- tion indicated by Fig.3, when the skater will move in a curve, the spring-bar D bending, asindicated by said figure, to permit of the inclined movement of thetrucks. As soon, however, as the skater assumes a vertical position withhis weight central on the stock of the skate, the resiliency of thespring-bar will cause the trucks to assume the position indicated byFig. 2, andthe skater will again move straight forward.

I am aware that prior to myinvention rollerskates have been made inwhich the trucks were constructed to turn in different directions byinclining the stock or tread sidewise.

I am also aware that it is not broadly new to join the trucks or rollerframes together by a spring-bar, or to connect the trucks orrollerframes'with the stock or tread by a ball-andsocket joint, andhence I'do not broadly claim any of these constructions; but

What I do claim as new, and desire to secure I by Letters Patent, is

1. The combination, withthe stock A, of the bearing-plates 13, securedto said stock or tread, and having concave sockets b, the

' or tread IOO right-angular brackets E, having ball-bearings 0, adaptedto said sockets, and means for elastically connecting said right-angularbrackets and for holding the same in their bearings substantially as setforth.

2. The combination, with the stock or tread A, the bearing-plates 13,having concave sockets, the right angular brackets E, havingballbearings adapted to said sockets, the springbar D,serving toelastically connect said brack- 1o ets E and hold the same in theirbearings, and the guide 0, attached to said stock or tread, and servingto sustain said spring-bar, substantially as described.

OLIVER ARNOLD. Witnesses:

EDMUND B. BABCOCK, J osnrn OMARA.

